Structural design and mechanical properties of corrugated steel web box girders in modern bridges

In order to study the practical application performance of corrugated steel web box girder in modern bridges, a study on the structural design and mechanical properties of modern bridges based on spatial finite element model is proposed. The main girder and the corrugated steel web box girder of the modern bridge are determined, and the working condition 1 (symmetric loading) and working condition 2 (eccentric loading) are also set up, and the prestressing system and the spatial finite element model are constructed. Using the spatial finite element model, the flexural ultimate load capacity, shear buckling, and shear stress strength of the corrugated steel web box girder are investigated. The vehicle load bias amplification factor (M2/M1=1.002) is 1.002, and Case 2 is exactly the same as Case 1. When the vehicle load positive stress bias amplification factor is taken to be 1.20, and the vehicle load shear stress bias amplification factor is taken to be 1.51, the designed bridge has excellent stability. In addition, the shear stress of the corrugated steel web is less than the design tolerance value, which indicates that the mechanical properties of the corrugated steel web are in line with the modern bridge design standards and requirements, which is of practical significance for the sustainable development of the building.